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    • 21. 发明授权
    • Method and apparatus for optically measuring electric current and/or
magnetic field
    • 用于光学测量电流和/或磁场的方法和装置
    • US4956607A
    • 1990-09-11
    • US314108
    • 1989-02-23
    • Masanori AbeSyunzo MaseYoshinari Kozuka
    • Masanori AbeSyunzo MaseYoshinari Kozuka
    • G01R15/24G01R33/032
    • G01R33/0322
    • A system for optically measuring the strength of an AC magnetic field, by an apparatus which includes a sensing head having a magnetooptical element, a polarizer and an analyzer, a light source device for producing a light beam to be transmitted through the sensing head, and a light-sensitive device for converting an optical output of the sensing head into an electric signal. The light beam is modulated by the sensing head to provide the optical output indicative of the strength of the AC magnetic field to which the magnetooptical element is exposed. The magnetooptical element is exposed also to a reference magnetic field different from the AC magnetic field, to thereby bias the light beam while being transmitted through the magnetooptical element. A first and a second component (E.omega.) and (E.sub.2 .omega.) of the electric signal is produced by the light-sensitive device. The first component (E.omega.) has the same angular frequency as that of the AC magnetic field, while the second component (E.sub.2 .omega.) has an angular frequency which is two times that of the AC magnetic field. The strength of the AC magnetic field is determined based on the first and second components (E.omega.) and (E.sub.2 .omega.).
    • 一种用于通过包括具有磁光元件的感测头,偏振器和分析器的装置来光学测量交流磁场的强度的系统,用于产生要透过感测头的光束的光源装置,以及 用于将感测头的光输出转换成电信号的感光装置。 光束被感测头调制以提供指示磁光元件暴露于的AC磁场的强度的光输出。 磁光元件也暴露于与AC磁场不同的参考磁场,从而在透射通过磁光元件的同时偏置光束。 由感光装置产生电信号的第一和第二分量(Eω)和(E2ω)。 第一分量(E omega)具有与交流磁场相同的角频率,而第二分量(E2ω)具有的角频率是交流磁场的两倍。 基于第一和第二分量(Eω)和(E2ω))确定交流磁场的强度。
    • 25. 发明申请
    • MAGNETIC COMPOSITE, METHOD FOR PRODUCING THE SAME, AND SHIELDING STRUCTURE
    • 磁性复合材料,其制造方法和屏蔽结构
    • US20100243313A1
    • 2010-09-30
    • US12642110
    • 2009-12-18
    • Tomoaki UedaMasanori Abe
    • Tomoaki UedaMasanori Abe
    • H05K9/00H01F1/01B22F9/06
    • H05K9/0086H05K9/0024
    • The present invention provides a magnetic composite capable of enhancing the effect of shielding against electromagnetic noise and the like (magnetic shielding effect) while inhibiting a possible eddy current, and a method for producing the magnetic composite, and a shielding structure comprising the magnetic composite. A shielding member 10 as a magnetic composite contains a resin 12 which is an insulator and serves as a matrix material and into which fine powders of an amorphous metal magnetic substance 10a containing Fe, Si, and B are mixed. In the shielding member 10, a plurality of the amorphous metal magnetic substances 10a are contained in the resin 12 at a volume fraction less than a percolation threshold. The type of the amorphous metal magnetic substance 10a is not particularly limited provided that the amorphous metal contains Fe, Si, and B.
    • 本发明提供一种能够在抑制可能的涡流的同时增强屏蔽电磁噪声等的磁性复合物(磁屏蔽效应),以及磁复合体的制造方法以及包含该磁性复合体的屏蔽结构体。 作为磁性复合体的屏蔽部件10包含作为绝缘体的树脂12,作为基体材料,并且含有Fe,Si,B的非晶质金属磁性体10a的微细粉末混入其中。 在屏蔽部件10中,多个非晶质金属磁性体10a以小于渗透阈值的体积分率包含在树脂12中。 无定形金属磁性体10a的种类没有特别限定,只要非晶态金属含有Fe,Si,B即可。